.floor {
    width: 100%;
    height: 100%;
    display: flex;
}
.left {
    width: 80px;
    height: 100vh;
    overflow-y: auto;
    background: pink;
}
.right {
    height: auto;
    height: 100vh;
    overflow-y: auto;
    flex: 1;
    background: skyblue;
}
.right_box {
    width: 100%;
    height: 10rem;
    background: yellow;
}
.active {
    background: green;
}